#模板、类和对象
class Song(object):

    def __init__(self,lyrics):
       self.lyrics=lyrics

    def sing_me_a_song(self):
        for line in self.lyrics:
            print(line)

happy_bday=Song(["Happy birthday to you",
                 "I don't want to get sued",
                 "So I'll stop right there"])

bulls_on_parade=Song(["They rally around the family",
                      "with pockets full of shells"])

happy_bday.sing_me_a_song()

bulls_on_parade.sing_me_a_song()
